Patents by Inventor Hamid Barjesteh

Hamid Barjesteh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Manufacturing method for color proofing elements
    Patent number: 6194123
    Abstract: Water coatable and water developable negative-acting color proofing single sheet and overlay systems are described. The water-soluble photosensitive color layer employed in each type of proofing construction includes a photopolymerizable polymer having a weight-average molecular weight between 5,000 and 100,000; an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300; and a water-soluble photoinitiator.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: February 27, 2001
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gordon Christopher Smith, Hamid Barjesteh, James Alan Bonham
  • Aqueous developable color proofing elements
    Patent number: 6010821
    Abstract: Water coatable and water developable negative-acting color proofing single sheet and overlay systems are described. The water-soluble photosensitive color layer employed in each type of proofing construction includes a photopolymerizable polymer having a weight-average molecular weight between 5,000 and 100,000; an alkaline soluble resin having a weight-average molecular weight between 1,000 and 200,000 and an acid number between 50 and 300; and a water-soluble photoinitiator.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: January 4, 2000
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gordon Christopher Smith, Hamid Barjesteh, James Alan Bonham
  • Providing imagewise variation in glossiness to a receptor
    Patent number: 5866297
    Abstract: This invention is a surface modifying element comprising a photosensitive layer on one side of a carrier substrate. The photosensitive layer comprises a photosensitive binder material and particulates. The invention is also a method of using the surface modifying element to create a receiver having imagewise variation in glossiness.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: February 2, 1999
    Assignee: Imation Corp.
    Inventors: Hamid Barjesteh, Michael B. Heller
  • Providing imagewise variation in glossiness to a receptor
    Patent number: 5633117
    Abstract: This invention is a surface modifying element comprising a photosensitive layer on one side of a carrier substrate. The photosensitive layer comprises a photosensitive binder material and particulates. The invention is also a method of using the surface modifying element to create a receiver having imagewise variation in glossiness.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: May 27, 1997
    Assignee: Imation Corp.
    Inventors: Hamid Barjesteh, Michael B. Heller
  • Thermal receptor sheet and process of use
    Patent number: 5372987
    Abstract: A process for forming a color proofing image by thermal transfer systems and an improved thermal transfer receptor sheet are described. The receptor sheet has a hot melt adhesive layer with one quarter percent or less of particles therein. In the thermal transfer process, both the image and a thermal transfer receptor layer are transferred to a second receptor surface.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: December 13, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard S. Fisch, Hamid Barjesteh, Jeffrey C. Chang
  • Pre-press proofing method
    Patent number: 5240810
    Abstract: Most prepress color proofing systems require the use of special receptor sheets. The differences between the special sheets and the final print sheet can affect the desired color balance. The use of a proof image on a temporary transfer sheet, with an adhesive layer between the image and a final receptor layer, enables the use of essentially any printing stock or printing surface as the final proofing image substrate.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: August 31, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Hamid Barjesteh